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微信小程序倒计时获取验证码 微信小程序实现倒计时60s获取验证码

Rolan 人气:0
想了解微信小程序实现倒计时60s获取验证码的相关内容吗,Rolan在本文为您仔细讲解微信小程序倒计时获取验证码的相关知识和一些Code实例,欢迎阅读和指正,我们先划重点:微信小程序倒计时验证码,微信小程序倒计时60s获取验证码,微信小程序验证码,下面大家一起来学习吧。

1、工具类(引用微信小程序提供的工具类)

countdown.js

class Countdown {
constructor(options = {}) {
Object.assign(this, {
options, 
})
this.__init()
}
/**
* 初始化
*/
__init() {
this.page = getCurrentPages()[getCurrentPages().length - 1]
this.setData = this.page.setData.bind(this.page)
this.restart(this.options)
}
/**
* 默认参数
*/
setDefaults() {
return {
date: `June 7, 2087 15:03:25`, 
refresh: 1000, 
offset: 0, 
onEnd() {}, 
render(date) {}, 
}
}
/**
* 合并参数
*/
mergeOptions(options) {
const defaultOptions = this.setDefaults()
for (let i in defaultOptions) {
if (defaultOptions.hasOwnProperty(i)) {
this.options[i] = typeof options[i] !== `undefined` ? options[i] : defaultOptions[i]
if (i === `date` && typeof this.options.date !== `object`) {
this.options.date = new Date(this.options.date)
}
if (typeof this.options[i] === `function`) {
this.options[i] = this.options[i].bind(this)
}
}
}
if (typeof this.options.date !== `object`) {
this.options.date = new Date(this.options.date)
}
}
/**
* 计算日期差
*/
getDiffDate() {
let diff = (this.options.date.getTime() - Date.now() + this.options.offset) / 1000
let dateData = {
years: 0,
days: 0,
hours: 0,
min: 0,
sec: 0,
millisec: 0,
}
if (diff <= 0) {
if (this.interval) {
this.stop()
this.options.onEnd()
}
return dateData
}
if (diff >= (365.25 * 86400)) {
dateData.years = Math.floor(diff / (365.25 * 86400))
diff -= dateData.years * 365.25 * 86400
}
if (diff >= 86400) {
dateData.days = Math.floor(diff / 86400)
diff -= dateData.days * 86400
}
if (diff >= 3600) {
dateData.hours = Math.floor(diff / 3600)
diff -= dateData.hours * 3600
}
if (diff >= 60) {
dateData.min = Math.floor(diff / 60)
diff -= dateData.min * 60
}
dateData.sec = Math.round(diff)
dateData.millisec = diff % 1 * 1000
return dateData
}
/**
* 补零
*/
leadingZeros(num, length = 2) {
num = String(num)
if (num.length > length) return num
return (Array(length + 1).join(`0`) + num).substr(-length)
}
/**
* 更新组件
*/
update(newDate) {
this.options.date = typeof newDate !== `object` ? new Date(newDate) : newDate
this.render()
return this
}
/**
* 停止倒计时
*/
stop() {
if (this.interval) {
clearInterval(this.interval)
this.interval = !1
}
return this
}
/**
* 渲染组件
*/
render() {
this.options.render(this.getDiffDate())
return this
}
/**
* 启动倒计时
*/
start() {
if (this.interval) return !1
this.render()
if (this.options.refresh) {
this.interval = setInterval(() => {
this.render()
}, this.options.refresh)
}
return this
}
/**
* 更新offset
*/
updateOffset(offset) {
this.options.offset = offset
return this
}
/**
* 重启倒计时
*/
restart(options = {}) {
this.mergeOptions(options)
this.interval = !1
this.start()
return this
}
}

export default Countdown

2、WXML部分:

<view class="weui-cell__ft">
 <view class="weui-vcode-btn" bindtap="vcode">{{ c2 || '获取验证码' }}</view>
</view>

3、JS部分:

import $wuxCountDown from 'countdown/countdown'
export {
 $wuxCountDown, 
}
import { $wuxCountDown } from '../../components/wux'
 vcode: function () {
 if (this.c2 && this.c2.interval) return !1
 this.c2 = new $wuxCountDown({
 date: +(new Date) + 60000,
 onEnd() {
 this.setData({
 c2: '重新获取验证码',
 })
 },
 render(date) {
 const sec = this.leadingZeros(date.sec, 2) + ' 秒后重发 '
 date.sec !== 0 && this.setData({
 c2: sec,
 })
 },
 })
 }

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